Parameter constraints and cosmographic analysis of Barrow agegraphic and new Barrow agegraphic dark energy models

Anamika Kotal; Sayani Maity; Ujjal Debnath; Anirudh Pradhan

doi:10.1140/epjc/s10052-025-14294-8

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2025) 85: 565
https://doi.org/10.1140/epjc/s10052-025-14294-8

Regular Article - Theoretical Physics

Parameter constraints and cosmographic analysis of Barrow agegraphic and new Barrow agegraphic dark energy models

Anamika Kotal¹, Sayani Maity²^a, Ujjal Debnath¹ and Anirudh Pradhan³

¹ Department of Mathematics, Indian Institute of Engineering Science and Technology, Shibpur, 711 103, Howrah, India
² Department of Mathematics, Sister Nivedita University, DG-1/2, Action Area 1, New Town, 700 156, Kolkata, India
³ Centre for Cosmology, Astrophysics and Space Science (CCASS), GLA University, 281406, Mathura, India

^a sayani.office88@gmail.com

Received: 3 January 2025
Accepted: 3 May 2025
Published online: 23 May 2025

Abstract

This research focuses on examining a non-flat Friedmann–Robertson–Walker (FRW) cosmological model of the universe incorporating both dark matter and dark energy. Two intriguing dark energy models, Barrow agegraphic dark energy (BADE) and new Barrow agegraphic dark energy (NBADE), which were introduced in accordance with the holographic principle incorporating Barrow entropy, have been selected to play the role of dark energy. Using datasets from cosmic chronometers and baryon acoustic oscillations, we utilized the Markov Chain Monte Carlo (MCMC) technique to constrain the parameters of our model. This enables us to make several possible comparisons between these novel models of dark energy and the $Λ$ $\Lambda$ CDM models. Here, we explore cosmological parameters, including the equation of state(EoS) parameter, jerk parameter, deceleration parameter, and cosmological planes such as the $q - r$ $$q-r$$ plane, $ω_{d} - ω_{d}^{'}$ $\omega _d - \omega '_d$ for different values of the model parameters by considering both the presence and absence of mutual interactions of the dark sector of the universe. In addition, we examined the thermal stability and the Swampland criteria of our constructed models. Additionally, we analyze the energy conditions and find that NEC and DEC are fulfilled, but SEC is broken, indicating model stability and supporting the current acceleration of the universe. In order to give a more precise explanation of the origin of cosmic structures, we lastly conduct a linear perturbation analysis to examine the growth in matter density perturbations.

© The Author(s) 2025

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